Chosen Solution
My phone is saying that I have headphones plugged in even though I don’t I’ve tried forcing a restart 4 times and that hasn’t worked I’ve looked into the place where an aux cable goes into and there doesn’t seem to be anything in it I just need some suggestions about how to fix it
Try cleaning the headphone jack with a q-tip dipped in isopropyl alcohol and see if that helps. If not you’ll have to replacing the charging dock assembly which has the headphone jack on it: iPhone 6s Lightning Connector and Headphone Jack iPhone 6s Lightning Connector Assembly Replacement
